On demand hot water, to replace regular 6 gal tank unit

well its worse than I expected. a ton of water damage, mold and super soft plywood. so my friend JJ and I took to ripping out the floor (had to pull the furnace as well). Oh, btw, we decided to just get a 6 gallon LP only water heater, the old one had electric as well, but that saved $150. check out the inprocess job.... yuck!















let the games begin...




what have I gotten myself into???






does anyone know where to get this stuff? - looks like a thin plywood laminated with 1.5" Styrofoam in between? we are thinking of just using mobile home trailer paneling with the smooth side facing the ground, then put a 1.5" layer of foam, then 3/4 plywood on top. finish it all off with some thin glue down carpet. and seal up the bottom underside.... with....??? not sure yet

thanks all, pray for my lungs (I think Ill wear a mask today....:S)